refactor 917

Author: luliyucoordinate

src/0917-Reverse-Only-Letters/0917.cpp

@@ -1,6 +1,7 @@
 #include <iostream>
 #include <vector>
 #include <string>
+#include <cctype>
 using  namespace std;
 
 static int x = []() {std::ios::sync_with_stdio(false); cin.tie(0); return 0; }();
@@ -12,12 +13,12 @@ class Solution
         int l = 0, r = S.size() - 1;
         while (l < r)
         {
-            if (!('a' <= S[l] and S[l] <= 'z') and !('A' <= S[l] and S[l] <= 'Z'))
+            if (!isalpha(S[l]))
             {
                 ++l;
                 continue;
             }
-            if (!('a' <= S[r] and S[r] <= 'z') and !('A' <= S[r] and S[r] <= 'Z'))
+            if (!isalpha(S[r]))
             {
                 --r;
                 continue;

src/0917-Reverse-Only-Letters/0917.py

@@ -1,12 +1,11 @@
-import string
 class Solution:
     def reverseOnlyLetters(self, S):
         """
         :type S: str
         :rtype: str
         """
-        p = [i for i in S if i in string.ascii_letters]
-        return ''.join([i if i not in string.ascii_letters else p.pop() for i in S])
+        p = [i for i in S if i.isalpha()]
+        return ''.join([i if not i.isalpha() else p.pop() for i in S])
 
 if __name__ == "__main__":
     S = "a-bC-dEf-ghIj"